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Atom transfer radical addition and enol-ester synthesis catalyzed by Ru–vinylidene complexes

✍ Scribed by Tom Opstal; Francis Verpoort

Book ID
104252390
Publisher
Elsevier Science
Year
2002
Tongue
French
Weight
227 KB
Volume
43
Category
Article
ISSN
0040-4039

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✦ Synopsis

Ru-vinylidene complexes, Cl 2 Ru{ C C(H) t But}(PCy 3 )(L) (L=PCy 3 or N-heterocyclic carbenes) reveal themselves as a versatile catalyst for the atom transfer radical addition (ATRA) of polyhalogenated alkanes to olefins, such as methylmethacrylate, styrene and 1-octene. Furthermore, these systems are excellent catalysts for the nucleophilic addition of carboxylic acids to terminal alkynes and yielded exclusively alk-1-en-2-yl esters. These complexes can also be transformed to their cationic counterparts by treating the neutral complexes with AgBF 4 and their catalytic potential in ATRA and vinylation reaction are investigated.

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